I know exactly what you mean. My best friend is exactly like this! I honestly hate jealously. It can really ruin friendships/relationships. I love her to death, but instead of her being jealous of my progress in things... I want her to be proud of me.
I guess that would be my pet peeve...
Runefactory! If you ever played and enjoyed harvest moon, you'll probably enjoy Runefactory. Main difference between the two games is that in RF, you battle and befriend monsters in several dungeons.